Water rights trading is an effective way to promote the redistribution of agricultural water saving within and among water-shortage regions. Reasonable transfer price can not only improve the income of farmers and irrigation areas, but also improve the efficiency of agricultural water use. However, the trading across industries or regions will diminish the ecosystem service value of arable land, and negatively impacts irrigation areas. This paper investigates the pricing model of agricultural water transaction, which combines water trading with ecological compensation to balance the benefits of both parties. A bi-level programming model of agricultural water trading was established for optimizing the prices and corresponding volumes of transaction across users in water markets. The context of this study is the Inner Mongolia Autonomous Region, which is a typical water-shortage region in China. Results show that adjusting price variables through the model, including transaction price and ecological compensation, led to an optimization of transaction volumes across users. The economic benefits also are optimized between the irrigation districts and industrial water users. Pricing model of water trading is also improved with ecological compensation. This study ultimately provides a useful reference for policy-makers in water-shortage regions.
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http://dx.doi.org/10.1007/s11356-022-23317-w | DOI Listing |
Can J Microbiol
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Sherbrooke Research and Development Centre, Agriculture and Agri-Food Canada, Sherbrooke, Quebec, Canada;
Agricultural practices, specifically the use of antibiotics and other biocides, have repercussions on human, animal and plant health. The aim of this study was to evaluate the levels of Enterobacteriaceae and Enterococcus, as antibiotic resistant marker bacteria, in various matrices across the agro-ecosystem of an antibiotic-free swine farm in Quebec (Canada), namely pig feed, feces, manure, agricultural soil, water and sediment from a crossing stream, and soil from nearby forests. Samples were collected in fall 2022, spring and fall 2023 and spring 2024.
View Article and Find Full Text PDFIntegr Environ Assess Manag
January 2025
Department of Environmental Toxicology, College of Agricultural and Environmental Sciences, University of California, Davis, CA, United States.
The herbicide oxyfluorfen [OXY; 2-chloro-1-(3-ethoxy-4-nitrophenoxy)-4-(trifluoromethyl)benzene] recently emerged as a potential solution to combat herbicide resistance in California rice. Proposed as a preemergent applied preflood to soil, products are in development for use with OXY-tolerant rice strains. Currently, OXY is not registered for use with rice and its use in or near aquatic resources is restricted due to its high aquatic toxicity.
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January 2025
International Institute for Sustainable Development-Experimental Lakes Area, Winnipeg, Manitoba, Canada.
Selenium (Se) is a naturally occurring metalloid in soils and rocks that is released by weathering processes; it is also enriched by some anthropogenic activities, including mining and agriculture. The mechanism of Se aquatic toxicity has been understood for several decades; at elevated concentrations, dietary Se can accumulate in maternal tissues of fish and birds, become deposited into their eggs, and can potentially result in impaired embryological development. North American environmental regulations have acknowledged differences in species sensitivity and variation among aquatic environments (i.
View Article and Find Full Text PDFJ Vis Exp
January 2025
Charlottetown Research and Development Center, Agriculture and Agri-Food Canada; Department of Chemistry, University of Prince Edward Island;
The iChip isolation technique uses an in-situ isolation device that increases the cultivability of previously unculturable microorganisms. Microorganisms are an important source of novel chemistries and potentially bioactive molecules. However, only 1% of environmental microorganisms can be cultured using conventional laboratory methods.
View Article and Find Full Text PDFEnviron Sci Technol
January 2025
Stockbridge School of Agriculture, University of Massachusetts, Amherst, Massachusetts 01003, United States.
Concern over nanoplastic contamination of wetland ecosystems has been increasing. However, little is known about the effect of photoaging on the distribution and biological response of the nanoplastics. Here, palladium-labeled polystyrene nanoplastics (PS-Pd NPs) at 0.
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